Improvement in stereotype-plates



Patented Jah. f3. 187,41.

Attorneys,

" UNITED STATES PATENT GEEICE.

MARSHALL J. HUGHES, OF NEW YORK, N. Y.

IM PROVEMENT IN STEFiEOTVPE-PLAHTES.

Specification forming part of Letters Patent No. 146,454, dated January 13, 1874; application filed December 8, 1873.

To all whom it may concern:

Be it known that I, MARsHALL J. HUGHES, of the city, county, and State of New York, have invented a new and Improved Reversible Stereotype-Plate; and I do hereby declare that the following is a full, clear, and exact descriptionof the same, reference being had to thc accompanying drawing forming a part of this specification, in Which- Figure 1 is a perspective view of the doublefaced stereotype-plate cast upon a flexible sheet-metal plate, part being cut away to show perforations in the latter. Fig. 2 shows a modiiication.

My invention consists, iirst, in a double-l faced or reversible stereotypeplate. It consists, secondly, in providing a plate with a lining or lateral extension of sheet metal to facilitate locking up the same.

Referring -to the drawing, the plate A has a type-face on each side, thus resembling two plates placed back to back an'd firmly joined together. In producing the plate, I place the faces of twomatrices opposite and closely approximated in the mold orV casting-box, and confine them by a gage of suitable construction, and (by other means and mode-s of procedure not needful to describehere) the metal being poured in the plate is cast, and only requires to be trimmed in the usual way to be ready for use. It is obvious that such a plate i y includes in the same space double the amount of reading-matter of the ordinary plate, since the matter on one side or face is of a different character from that on the other. I usually cast it of the same, or nearly the same, thickness and weight as those ot the ordinary kind; but its thickness may range from onesixteenth of an inch to an inch, or what is termed type high.

To provide the plate with the lining `or ex tension before referred to, I employsheet tin, copper, zinc, or other analogous material.` The sameis placed in the casting-box in suitable local relation to the matrices, and the metal cast upon and around it, leaving lateral marlining or margin, the latter is first bent down y at right angles, and the plate then placed on the block or furniture to raise its face type i high. The lining Will then bermly secured by the pressure of the column-rules `or other devices in the chase used. When the plate is cast type high, the extension may be, of course, dispensed with. When the 4required number of impressions have been taken from one face of the plate it is reversed on the block and scoured as before.

Having thus described my invention, what I claim as new is- 1. A double-faced or reversible stereotype-` plate, substantially as shown and described.

2. The combinatiomwith'a stereotypefplate, of an extension or margin of lexiblematerial,

Aas shown and described. t

3. The combination of a perforated flexible plate with the reversible plate, as specified. i MARSHALL J. HUGHES. Witnesses: Y

GHAs. H. FLounNoY, T. A.. R. NELSON. 

